Chrome Sidebar Too Wide? Complete Browser Sidebar Width Guide
Chrome browser sidebar has a minimum width limit of 360px and cannot be made smaller. Learn which browsers support smaller sidebar widths, including Firefox and Vivaldi.
Chrome browser (and most Chromium-based browsers) has a minimum sidebar width limit of 360px. This is a browser limitation that extensions cannot change.
Chrome Sidebar Width Limitation
Why is the Minimum Width 360px?
This is a design limitation of Chrome's Side Panel API:
- •Chrome team set 360px as the minimum sidebar width
- •This limit applies to all extensions using Chrome Side Panel API
- •Extensions cannot bypass this minimum width limit
- •While you can drag to adjust sidebar width, you cannot make it smaller than 360px
How to Report This Issue?
You can provide feedback to the Chrome team and vote to lift the minimum width restriction:
👉 Chrome Issue Tracker - Sidebar Width Issue
Can Chrome Sidebar Width Be Made Smaller?
No. Chrome sidebar minimum width is fixed at 360px and cannot be adjusted smaller.
Can Microsoft Edge Sidebar Width Be Made Smaller?
❌ Not supported
Can Brave Browser Sidebar Width Be Made Smaller?
❌ Not supported
Can Arc Browser Sidebar Width Be Made Smaller?
❌ Not supported
Can Firefox Sidebar Width Be Made Smaller?
Yes. Firefox sidebar is not limited to 360px and can be adjusted to smaller widths.
Can Vivaldi Sidebar Width Be Made Smaller?
Yes. Vivaldi supports custom sidebar width and can be adjusted to smaller widths.
Can Opera Sidebar Width Be Made Smaller?
❌ Not supported
Can Comet Browser Sidebar Width Be Made Smaller?
❌ Not supported
Can Dia Browser Sidebar Width Be Made Smaller?
❌ Not supported
Can Zen Browser Sidebar Width Be Made Smaller?
❌ Not supported
Browser Sidebar Width Support Summary
| Browser | Smaller Width | Notes |
|---|---|---|
| Google Chrome | ❌ Not supported | Chrome Side Panel API limit |
| Microsoft Edge | ❌ Not supported | - |
| Brave | ❌ Not supported | - |
| Arc | ❌ Not supported | - |
| Firefox | ✅ Supported | Not limited to 360px |
| Vivaldi | ✅ Supported | Supports custom width |
| Opera | ❌ Not supported | - |
| Comet | ❌ Not supported | AI browser by Perplexity |
| Dia Browser | ❌ Not supported | Emerging AI browser |
| Zen Browser | ❌ Not supported | Emerging browser |
VertiTab Supports Multiple Usage Modes
If you're not satisfied with sidebar width, VertiTab offers other ways to manage tabs:
⚡ Popup Window
Open a standalone tab management window via the extension icon, with customizable window size, not limited to 360px. Ideal for scenarios requiring larger or smaller operating space.
💡 Web Sidebar
Invoke the vertical tab bar from any page edge, with customizable trigger position and width. Quickly manage tabs without opening the browser sidebar.
Manage Tabs with VertiTab
Choose the mode that works best for you:
- •🌳 Vertical tab list
- •📑 Tab group management
- •☁️ Cross-device cloud sync
- •🤖 AI smart grouping